hello, i have only just started down the left hand path and with the cult. what grimroirs should i pick up and study? any recommendations?

The Bible of Cthulhu is our most essential tome of wisdom, as within it is everything one needs to understand being a cultist in The Cult of Cthulhu.
The Dreamlands Journal serves as a companion book to The Bible, aiding ones path in lucid dreaming.
The Black Book of Nyarlathotep will be released sometime this year, describing the darker and more esoteric facets of our belief system.